Fluid-pressure regulator



t e e h S w e e h S 2 R O M we E A m A. Gm P m U L F a d 0 M 0 WPatented July 16,1895.

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F. M. GAMACHE. FLUID PRESSURE REGULATOR.

Patented July 16, 1895.

UNITED STATES PATENT OFFICE.

FRANK'M. GAMAOHE, OF. ST. LOUIS, MISSOURI.

FLUlD-PRE SSURE REGULATOR.

SPECIFICATION forming part of Letters Patent No. 542,635, dated July 16,1895. Application filed October 29, 1894. Serial No. 527,104. (Nomodel.)

To all whom it may concern:

Be it known that I, FRANK M. GAMACHE, of St. Louis, Missouri, haveinvented certain new and useful Improvements in Fluid-PressureRegulators, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart hereof.

My invention has relation to improvements in fluid-pressure regulators;and it consists in the novel arrangement and combination of parts morefully set forth in the specification and pointed out in the claims.

In the drawings, Figure l is a side elevation of my complete invention.Fig. 2 is a detail plan view of the controlling-valve of the device.Fig. 3 is a middle vertical section taken through the device; and Fig.4isa section of the valve, taken on thelineas 0c of Fig. 2.

The object of my invention is to construct a fluid-pressure regulatorwhich will be compact, simple, and durable and at the same timesensitive and susceptible of accurate adjustment. To this end I'havedevised an apparatus which in detail can be described as follows:

Referring to the drawings, 1 represents the casing within which theoperative parts are located. suitable heating or similar system, theopposite end of said passage having a pipe connection 3 leading from asuitable boiler or. steam orsimilar generator. (Notshown.) In the pathof the passage 2 in the casing and within suitable bearings is mountedand operates a rotatable cylindrical controllingvalve 4, havinglongitudinal diametrically opposite inlet and exit openings 5 and 6respectively. From one of the cylindrical ends of the valve projects astem 7, the stuffingbox or bearing thereof being closed externally by aWasher 8 passed over the stem and on the outside of the casing. To theouter end of the stem 7 is secured an arm 9, the manner of connecting itbeing accomplished preferably by a fastening-screw 10. Inside of thecylindrical valve 4, supported on and guided within suitable guide-bearings 11, which latter are located ata suitable distance from theinner walls of the circular ends of the valve, operates an emergencyblock-valve The passage 2 thereof leads to any 12, the motion thereofbeing arectilinear one within the guides of the said bearings 11.

Communicating with the passage 2 is a pasv r inwardly-curved endprovided witha slot 20,

along which the free end of the arm 9 may be variably adjusted andsecured by the securing screw or bolt 21. The free end ofthe arm 9 isprovided with an extra opening 22 exterior to the one through whichpasses the bolt 21 for the purpose of varying the adjustment between thearm 9 and the slotted end of the pivoted arm 19. The cap 16 is providedwith a polygonal head 23 for operating the same, and between the'innersurface of the cap and the upper surface of the piston 14 and encirclingthe stem 15 is confined an adjusting-spring 24, said spring beingemployed to set the approximate pressure at which the regulator is to beused.

The operation of the device is as follows: Suppose the spring 24 is setto operate or respond to a pressure of forty pounds and that theboiler-pressure is forty-five pounds. As the steam from the boilerpasses through the device by way of the pipe 3, then when forty poundsand a little over have been reached the. piston 14 will be drivenupwardly, com pressing the spring 24 against the cap 16, raising thestem 15, to which the upper end of the arm 19 is pivoted, and by theupward movement of the stem the arm 19 is pulled after it, rotating thearm 9, to which it is secured, and thus in turn rotating the stem 7 ofthe valve, and consequently the valve 4, thus closing its ports 5 and 6to the admission to and escape of steam from the same into theheatingsystem through the passage 2. In this manner the pressure withinthe system is alwayskeptconstant. The amount and rapidity of rotationgiven to the stem 7 and arm 9 secured thereto depends on the relativeconnection of the latter with the slotted end of the arm 19, on therelative position of the upper end of the arm 19 on the stem 15, on thedistance to which thecap 16 has been screwed into the casing, and on theconsequent degree to which the spring 24 is compressed. For fineadjustment the free end of the arm 9 is shifted at will along the slot20 by the bolt 21 passing either through the opening, as shown in Fig.1, or the opening 22 exterior to the same, and when once adjusted thetwo arms are firmly secured. When the pressure between the boiler andheating system is balanced, or when the parts are in their normalposition, they occupy the relative position shown in Fig. 3. If for anyreason the pressure in the boiler should suddenly drop by reason ofexplosion or other cause, then the excess of pressure in the system willforce the emergency-valve 12 from its seat against the open,- ing 5,closing the latter to any escape of the fluid from the heating system.My present device is adapted not only to steam systems but to fluidsystems generally.

Having described my invention, what I claim is- 1. A fluid-pressureregulator comprising a casing, a passage leading therefrom to a suitablegenerator and system, a regulator valve 111 the casing normallyin opencommunication with said passage, suitable means for 0 passage from thegenerator into the casing,

substantially as set forth.

2. A fluid-pressure regulator comprising a casing, a passage leadingtherefrom to a suitable generator and system, a regulator valve in thecasing normally in open communication with said passage,an arm securedto said valve, a fluid-operated piston in said casing, a stem on saidpiston, a pivoted arm secured to the stem, an inwardly curved slot atthe opposite end of said arm, means for securing the end of the armsecured to the valve in an adjusted position along the slot of thepivoted arm, and an emergency valve loosely mounted within the regulatorvalve and controlling the inlet passage from the generator into thecasing, substantially as set forth.

In testimony whereof I aflix my signature in the presence of twowitnesses.

FRANK M. GAMACHE.

Witnesses:

LEE SALE, EMIL STAREK.

